CN2247131Y - Theft-proof device for bicycle - Google Patents

Abstract

The utility model provides an anti-theft device which is assembled on a bicycle or a motorcycle and can be used for locking a tap. The basic principle of the utility model is that a lock core assembly which is composed of a lock core, a sleeve of the lock core, a marble, a spring, etc. is assembled on a bicycle and is inserted into the part of a front fork; a kelly is connected with the lock core; the corresponding part of the front fork is provided with a clamping groove; the lock core is rotated to make the kelly be clamped into the clamping groove; the tap can not rotate freely and the bicycle can not be ridden to achieve an anti-theft purpose.

Description

Theft-proof device for bicycle

The utility model relates to a kind of anti-joyride device, particularly is used in vehicles such as bicycle, motor bike and locks and decide the anti-joyride device of tap.

At present the lockset that uses on the bicycle is to pin front-wheel or trailing wheel can not rotate it mostly, or with bicycle lock on fixing stake, bar, it can not be moved and reach theft-proof purpose.These locksets have plenty of on the bicycle of being installed in, and what have separates with bicycle, and after lockset was destroyed, bicycle can freely be ridden, and was difficult to reach theft-proof purpose.

The purpose of this utility model provides that a kind of and parts bicycle hold together, the locking bicycle tap can not rotate it, the anti-joyride device that promptly can not ride of not unblanking.

The purpose of this utility model is achieved in that at the bicycle tripod front end and is used for inserting assembling one lock set core assembly in the vertical short tube of front fork.The lock core assembly set comprises lock core, lock core cover, pellet shot from a slingshot, spring, key etc., and its structure and conventional spring lock are similar.Lock core axis and spider front end vertically the axis antarafacial of short tube are vertical, and when key inserted in the key hole of lock core, lock core can be that rotate at the center with its axis.On lock core, be associated with a kelly with the lock core axis normal, must locking bicycle during tap kelly be in downward position.Put with the corresponding position of kelly at lock core and to have a microscler through hole, one of kelly passes from the through hole of lock core cover.The position of inserting on bicycle front fork in the vertically short tube of spider has a vertical draw-in groove, insert lock core and lock core is rotated 90 ° with key, drive kelly and forward horizontality to from downward state, an end of kelly just snaps in vertical draw-in groove on the front fork, makes front fork not rotate.

The utility model is equivalent to install a lock between bicycle tripod and front fork, this car can not be ridden reach theft-proof purpose owing to front fork can not rotate, and the utility model is simple in structure, be connected as a single entity with car, survivable, the user makes, and theftproof performance is good.

When Fig. 1 is assemblied on the bicycle for the utility model, along bicycle front fork radial section scheme drawing.

Further specify structure of the present utility model below in conjunction with Fig. 1.The 1st, the vertically short tube of spider front end.The lock core 4 of band key hole is assemblied in the lock core cover 10, respectively in several pellet shot from a slingshot holes, pellet shot from a slingshot 8, spring 9 is housed in the pellet shot from a slingshot hole on lock core 4 and the lock core cover 10; The structure of the lock core assembly set of being made up of lock core 4, lock core cover 10, pellet shot from a slingshot 8, spring 9 and key 6 is similar with the spring lock of the same routine of function.One lock set core assembly is assemblied in the vertical short tube 1, and the axis of lock core 4 is vertical with the axis antarafacial of vertical short tube 1, be associated with a kelly 5 with the lock core axis normal on the lock core 4, have a microscler through hole 11 with kelly 5 corresponding positions on the lock core cover 10, the other end of kelly 5 passes from through hole 11, the position of inserting on the bicycle front fork 2 in the vertical short tube 1 has a vertical draw-in groove 7,3rd, tap.Vertically the position of draw-in groove is, when key 6 insertion lock cores 4, and, drive kelly 5 around 90 ° of lock core rotational with 90 ° of lock core 4 rotations, when kelly 5 is horizontal, one of kelly 5 corrects in the vertical draw-in groove 7 that snaps on the front fork, and front fork 2 can not freely be rotated, and the crossbeam of tap 3 becomes non-90 a ° angle with the crossbeam of spider, at this moment, extract key out, lock core 4 is blocked and can not rotate by pellet shot from a slingshot 8, thereby reaches theft-proof purpose.When needing by bike, insert key, lock core 4 is rotated 90 °, kelly 5 is deviate from from vertical draw-in groove 7 of front fork, is in downward state, and front fork 2 can freely rotate, and bicycle can freely be ridden.

The utility model also can combine with motor bike, is similar to the mode that is assemblied on the bicycle, is assemblied on the motor bike.

Claims (1)

1, a kind of theft-proof device for bicycle, by the lock core assembly set, the bicycle tripod front end is short tube (1) vertically, bicycle front fork compositions such as (2), the lock core assembly set is by lock core (4), lock core cover (10), pellet shot from a slingshot (8), spring (9), key compositions such as (6), its structure and conventional spring lock are similar, this theft-proof device for bicycle is characterised in that: the lock core assembly set is contained in the bicycle tripod front end vertically short tin (1), the axis of lock core (4) is vertical with the axis antarafacial that the spider front end is vertically lacked tube (1), lock core (4) is gone up and the lock core axis normal is associated with a kelly (5), go up and the corresponding position of kelly (5) has a through hole (11) at lock core cover (10), (5) one of kellies and lock core (4) link, the other end passes from the through hole (11) of lock core cover (10), and bicycle front fork (2) is gone up the position of inserting in the vertical short tube (1) and had a vertical draw-in groove (7).

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